This report list tags which are defined in the database, but not used on graphics, but which nevertheless probably have a valid reason to be in the database because they seem to be useful alarm tags. It is not necessary for alarm tags to be used on graphics in order to be functional. The "unused" description merely means that they are not found on graphics, not that they are not used at all.
DBDOC uses several heuristics to determine if a tag is probably a useful active alarm tag:
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